For a better Project Portfolio Management, with Profields you can create own custom fields at project level. Organize better your JIRA Projects adding them the information you need such as due dates, budgets and JIRA users.
Are you updating from Profields 4.x? Check out the Migration Guide to see what have changed
Are you using Script Fields? You should read this
Profields 5.0 is Compatible with Chrome, Safari and Firefox. We are working with Atlassian on the compatibility with Internet Explorer 11